JP2007054532A - Simple test device for glaucoma - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple testing device effective in the early detection of glaucoma. <P>SOLUTION: A case body 4 houses a light-emitting plate 10 whose light-emitting surface is covered with a diffuser 7 to equalize the light emission from the surface. The light-emitting plate 10, energized by a battery 8, is controlled with a control pushbutton switch 13 through a control circuit 9 so that the light can flash on and off. A mask 11 covering the opened part of the case body is provided with a number of holes 12 which are uniformly arranged almost all over the surface. A center hole 12a located at the central point is provided with a red-colored transparent member, and four supplementary holes 12b located individually apart in the directions of four corners from the center hole are provided with green-colored transparent members. An examinee can easily check whether or not he/she has developed glaucoma by merely staring at a dotted mark at the center with one eye, because if he/she has, those surrounding holes that are supposed to emit light uniformly can be invisible in part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a glaucoma simple inspection machine for early detection of glaucoma.

  Glaucoma is an ophthalmic disease in which the visual field is lost without any subjective symptoms. Therefore, when the medical condition progresses without subjective symptoms, it may lead to blindness. If we detect early and continue to use eye drops that reduce intraocular pressure to prevent progression, it is possible to prevent inconveniences in daily life.

For glaucoma examination, there are intraocular pressure measurement and visual field examination, etc., which are carried out using a precise examination device at a specialist. In addition, there exists what uses a visual field inspection chart as what performs a visual field inspection easily (for example, refer patent document 1).
JP 2004-49564 A

  However, if you have an ophthalmologist and have an intraocular pressure measurement or visual field examination like a regular checkup, you can know the presence or absence of symptoms, but if you have no subjective symptoms, go to an ophthalmologist. The current situation is that it is 100 million yen. In addition, as described above, although it is a terrible illness that can lead to a serious situation such as blindness, it may be left unattended until symptoms progress to some extent without noticing the onset.

  The reason for the late detection of the onset is usually visually recognized by both eyes, and even if glaucoma develops in one eye and the visual field is lost, the visual field is covered by the other eye. It is possible that you do not notice. Further, even when viewing with one eye, it has been difficult to discover with subjective symptoms unless the central portion of the visual field is missing or until the visual field missing portion is enlarged.

  According to one statistic, in Japan today, nearly 6% of people over the age of 40 have glaucoma, while about 10 to 20% are aware of symptoms and are treated. It is said. In this way, among people who already have glaucoma, there is a risk of losing sight as the symptoms progress, but it is a reality that many people are unaware of the danger. Therefore, the present inventor has paid attention to the fact that such a problem can be solved and glaucoma can be easily inspected for early detection of glaucoma.

  In order to solve such problems and realize a simple inspection machine effective for early detection of glaucoma, in the present invention, a light emitting means having a light emitting surface that emits light with a uniform luminous intensity, A mask that covers the entire surface, and the mask has a pattern that is symmetrical with respect to the center, and the pattern is formed by a transmission portion that transmits light on the light emitting surface and a light shielding portion that blocks the light. It is assumed that at least a predetermined range centered on the center of the symmetric shape of the pattern is set to one color, and a color located at the center of the pattern is set to another color.

  In particular, the pattern may be a polka dot pattern, and the pattern located at the four corners with respect to the center of the pattern may have a color different from that of the predetermined range.

  As described above, according to the present invention, for example, a mask provided with a pattern in which a transmission portion is a through hole and a plurality of through holes are arranged so as to have a target shape with respect to the mask center is used. A light emitting means using a light emitting plate and a diffuser is provided so that a plurality of through holes can emit light evenly on the mask surface during light emission. If the emission color is white, the through hole located at the center of the mask is red, etc. As a conspicuous color, glaucoma may develop because glaucoma has developed by observing the red color with one eye. You can easily check that there is. As described above, since the mask, the light emitting plate, and the diffuser can be easily configured, an inexpensive and planar inspection machine can be obtained. As a result, it is easy to install and can be easily installed in schools, public halls, sports club facilities, golf courses, and even hospitals. it can. By using this inspection machine capable of performing such a simple inspection, it can be an opportunity to have a specialist immediately inspect when there is a risk of glaucoma. As a result, a greater number of people can be treated during the mild condition before the symptoms progress.

  In particular, when the pattern is a polka dot pattern, for example, a pattern in which small-diameter through holes are regularly arranged vertically and horizontally can be obtained, and the mask can be easily manufactured. For example, when you want to check a wide range in the upper right range from the center of the field of view by placing a different color from the same color in the predetermined range at the four corners with respect to the center of the mask It is possible to easily perform a visual field inspection over a wide range by looking at the lower left mark from the center and checking whether the upper right range is evenly lit.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a glaucoma simplified inspection machine 1 according to the present invention, and FIG. 2 is a cross-sectional view of a principal part taken along line II-II in FIG. As shown in the figure, the inspection machine 1 can be used by being hooked on a wall 2 via a hook 3.

  The case of the inspection machine 1 has a flat box-shaped case body 4 having an engagement hole for hooking the hook 3 and facing the bottom surface of the wall 2 in the hooked state. The lid 5 is configured to cover the opposite opening surfaces, and the thin plate-like cover 6 is supported on the case body 4 via, for example, a hinge. In the case main body 4, a rectangular light emitting plate 7 having a light emitting surface facing the lid 5, a battery 8 that may be, for example, a dry battery as a power source of the light emitting plate 7, and the battery 8 and the light emitting plate 7 The control circuits 9 connected to each other are provided at appropriate positions.

  The lid 5 is provided with an opening 5a having a slightly smaller area than the light emitting surface of the light emitting plate 7, and the back surface side (light emitting plate 7 side) of the lid 5 is shielded to cover the entire surface of the opening 5a. For example, a diffuser 10 having the same area as the light emitting surface of the light emitting plate 7 is fixed. The diffuser 10 is intended to obtain uniform surface light emission on the surface of the diffuser 10 even if light emission unevenness occurs on the light emitting surface of the light emitting plate 7.

  Although various forms can be considered as the light emitting means, the illustrated example is an example. The light emitting plate 7 in the illustrated example has four surfaces excluding a rectangular plate-shaped light guide 7a, an incident surface 7b composed of one of the four side surfaces, and an exit surface 7c composed of a main surface (surface). The reflection paper 7d is provided. A lamp 15 made of, for example, a fluorescent tube is provided in the case main body 4 at a position facing the incident surface 7b, and a reflector 16 that covers the lamp 15 and is opened toward the incident surface 7b is provided. The diffuser 10 is provided in a size that covers the emission surface 7c described above. The light from the lamp 15 is reflected directly or by the reflector 16 and enters the light guide 7a from the incident surface 7b, and the reflected light reflected by the reflecting paper 7d is emitted from the entire exit surface 7c and enters the diffuser 10. . As described above, the surface of the diffuser 10 (on the lid 5 side) emits uniform surface light. In this way, the light emitting means is configured.

  A mask 11 having an inspection surface of about B5 plate that is flush with the outer portion of the opening 5a of the lid 5 is attached to the opening 5a of the lid 5. The surface of the mask 11 is colored black. The mask 11 has holes 12 formed of a plurality of through-holes that are arranged at equal pitch intervals in two orthogonal axes on the surface (up and down, left and right in FIG. 1) and that have a diameter of about 1 mm and penetrate in the thickness direction. Arranged patterns are formed. For example, a red transparent member is fitted in the center hole 12a that is the center of the pattern of the plurality of holes 12 that is the center of the mask 11. Further, auxiliary gaze holes 12b into which, for example, green transparent members are fitted are disposed in the vicinity of the four corners of the mask 11 with the center hole 12a as the center. The center hole 12a and each auxiliary gazing hole 12b are formed to have a slightly larger diameter than the other holes 12.

  An operation pushbutton switch 13 is connected to the lid 5 via a cable having a certain length. When the operation pushbutton switch 13 is turned on, the light emitting surface of the light emitting plate 7 emits light (flashes) at a predetermined cycle. For example, it may blink only while the operation push button switch 13 is being pressed. The blinking interval is suitably about 0.5 to 5 times / second, but is not limited to this range. At the time of light emission, light is emitted in the light emission color (for example, white) of the light emitting plate 7 in the many holes 12. That is, a pattern (each hole 12) in a predetermined range (for example, a two-dot chain line in FIG. 1) centering on the center hole 12a emits light in one color (white), and the center hole 12a is colored red as described above. The four auxiliary gazing holes 12b emit light in green as described above. The auxiliary gazing hole 12b may be the same red color as the central hole 12a.

  When the cover 6 is not in use, the cover 6 is rotated as shown by an arrow A in FIG. 2, and is closed on the case body 4 in a closed position so as to cover the surface of the cover 5 as shown by an imaginary line. Thus, the surface of the mask 11 can be protected. When in use, it is reversed and opened and hung under the case body 4. In addition, a printed matter is affixed on the inner surface of the cover 6 (the surface facing the front in a suspended state), or characters are formed on the inner surface of the cover 6 by uneven processing, so that the usage instructions of the inspection machine 1 are used. 14 is described.

  The usage procedure of the inspection machine 1 configured as described above will be described below. First, the set of the inspection machine 1 is hung on the wall 2 as described above, and the position of the mask is set to a standard human eye height when the hook 3 is fixed. Adjust to the extent that the center of 11 is located. Preferably, it is hung by a hoisting device that can be stopped at an arbitrary height, and in that case, the height can be adjusted so that the eye of the subject and the center hole 12a face each other.

  The examinee faces the mask 11 at a distance of about 30 cm, covers one eye with his / her hand and looks at the mask 11 with one eye, and presses the operation pushbutton switch 13 with the free hand. Push. When the operation push button switch 13 is turned on, the light emitting plate 7 blinks. The examinee looks at the central hole 12a with one eye and confirms whether or not the light emission (bright spots) from the holes 12 arranged in the entire mask 11 looks even with the staring state. The amount of light emitted from each hole 12 is uniform because the light is distributed through the diffuser 10 even if the light amount distribution on the light emitting surface of the light emitting plate 7 is uneven. Therefore, there is no problem if it can be confirmed that the mask 11 is illuminated uniformly over the entire surface in the above-described visual recognition state.

  On the other hand, when a part of the lighting state cannot be clearly seen or when it becomes cloudy, there is a possibility that a part of the visual field is missing, and it is necessary to promptly undergo a close examination by a specialist. This determination can be easily made as described above, and since it is difficult to regularly receive examinations by a specialist, the problem that early detection of the onset of glaucoma is delayed can be solved.

  When it is desired to check over a wider range, it is possible to look at one of the auxiliary gazing holes 12b instead of the center hole 12a. For example, when it is desired to confirm a wide range in the upper right range from the center of the visual field, by staring at the auxiliary gaze hole 12b at the lower left of the center hole 12a, by checking whether the upper right range is evenly lit, The above inspection is possible.

  By installing the inspection machine 1 in a place where many people gather, it can be an early detection of glaucoma in many people. For example, it may be installed in a school, public hall, sports club facility, golf course, or hospital. Since such a place can be easily inspected, an effect of enabling early detection can be obtained. Of course, since it is not a formal inspection, if any abnormality is felt by the inspection machine 1, it is necessary to undergo a formal inspection by a specialist. Moreover, as above-mentioned, the inspection surface should just be a magnitude | size about B5 plate, and since the magnitude | size of the inspection machine 1 whole does not become large and does not take a wide installation space, it can install easily. As a result, it becomes more visible to people and can contribute to the early detection of people without many subjective symptoms.

  It is especially good to place it in an ophthalmology waiting room. Normal pressure glaucoma is a disease in which visual field stenosis similar to glaucoma appears in spite of a normal range of intraocular pressure, even though normal intraocular pressure tests are mainly used for glaucoma. Also, about one third of glaucoma is said to be normal-tension glaucoma, and there are many ratios that cannot be detected by intraocular pressure measurement. On the other hand, visual field inspection using a dedicated visual field inspection machine takes about 20 minutes per person, and it is very difficult in terms of time to have most of the hospitalized persons visit this hospital. Therefore, this inspection machine 1 is installed in an ophthalmology waiting room, etc., and the person himself / herself can freely and freely check while waiting for an examination. It can also be used to dig up buried patients, and glaucoma can be examined efficiently.

  In the illustrated example, the mask 11 is provided with a large number of holes 12, 12 a, and 12 b, and inspection is performed by visually confirming whether or not light is emitted uniformly from these holes. However, the mask 11 is provided with holes. On the contrary, the mask 11 is made of a transparent plate, and a black circle filled with black is provided on the surface of the mask 12 instead of the holes 12, and a red circle filled with red is provided instead of the center hole 12a. Alternatively, a green circle filled with green may be provided. In this case, the red circle corresponding to the center hole 12a is looked at and it is confirmed whether or not a large number of surrounding black circles are seen evenly. Each circle may be directly attached to the surface of the diffuser 10. In addition, each of the holes 12, 12a, and 12b is round in the illustrated example, but is not limited to the shape, and may be a rectangle or other shapes.

  Furthermore, the pattern is not limited to a regular pattern that is evenly arranged in the vertical and horizontal directions, such as the holes 12, 12 a, and 12 b described above. One example is shown in FIG. 4 corresponding to FIG. In addition, the same code | symbol is attached | subjected to the part corresponding to the said example of illustration, and the detailed description is abbreviate | omitted. The mask 11 shown in FIG. 4 is formed with a pattern in which a plurality of holes 17 having different shapes that are symmetrical with respect to the center thereof (reference numerals are representatively attached to only one hole). Yes. A center hole 17a having the same function as the center hole 12a is provided at the center of the pattern (center of the mask 11). A red transparent member is fitted into the center hole 17a as described above. When the mask 11 is made of a transparent member, the pattern shown in FIG. 4 is formed in red for those corresponding to the center hole 17a and black for the others. In this way, by preparing a plurality of masks 11 having different patterns, they can be arbitrarily replaced. Therefore, when a plurality of types of inspection machines are provided, they can be manufactured at low cost and a new pattern has been developed. Cases can be easily handled.

It is a front view which shows the glaucoma simple inspection machine based on this invention. It is principal part sectional drawing seen along the II-II line | wire of FIG. It is a front view which shows the light-emitting plate seen from the arrow III line of FIG. It is a figure corresponding to FIG. 1 which shows the other example of a mask.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inspection machine 4 Case main body 5 Cover body 6 Cover 7 Light-emitting plate, 7a Light guide, 7d Reflective paper 8 Battery 9 Control circuit 10 Diffuser 11 Mask 12 hole, 12a Center hole, 12b Auxiliary gaze hole 17 Hole, 17a Center hole

Claims (3)

A light-emitting means having a light-emitting surface that emits light with a uniform luminous intensity and a mask that covers the entire surface of the light-emitting surface;
The mask has a pattern that is symmetrical with respect to the center;
The pattern is formed by a transmission part that transmits light on the light emitting surface and a light shielding part that blocks the light,
A glaucoma simple examination machine characterized in that at least a predetermined range around the center of the symmetrical shape of the pattern is set to one color, and a color located at the center of the pattern is set to another color.   The glaucoma simple inspection machine according to claim 1, wherein the pattern is a polka dot pattern.   3. The glaucoma simple examination machine according to claim 1, wherein the pattern located at the four corners with respect to the center of the pattern has a color different from that of the predetermined range. 4.

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